Toluene-4-sulfonic acid (R)-2-hydroxy-2-[(2R,5R)-5-((S)-2-oxo-[1,3]dioxolan-4-yl)-tetrahydro-furan-2-yl]-ethyl ester

Toluene-4-sulfonic acid (2S,3S)-3-{(R)-3-(tert-butyl-dimethyl-silanyloxy)-3-[(2R,5R)-5-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-tetrahydro-furan-2-yl]-propyl}-oxiranylmethyl ester